Recent questions tagged scala

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scala - on demand actor get or else create

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scala - Why Some(null) isn't considered None?

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scala - How can I get the name of an Akka actor from within the actor itself?

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scala - Reading from Cassandra using Spark Streaming

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scala - instantiate object with reflection using constructor arguments

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scala - selecting a range of elements in an array spark sql

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scala - Using Spark UDFs with struct sequences

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scala - How to designate a thread pool for actors

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scala - How to execute multi line sql in spark sql

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scala - Spark : How to union all dataframe in loop

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scala - SBT Test Error: java.lang.NoSuchMethodError: net.jpountz.lz4.LZ4BlockInputStream

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scala - Play Framework: Dependency Inject Action Builder

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scala - rely on methods of case class in trait

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scala - Adding a column of rowsums across a list of columns in Spark Dataframe

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scala - multiple joins with slick

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scala - How to add columns into org.apache.spark.sql.Row inside of mapPartitions

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 828 views

scala - Reading multiple files from S3 in Spark by date period

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Spark-SQL : How to read a TSV or CSV file into dataframe and apply a custom schema?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 800 views

scala - How to use TailCalls?

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1 answer 1.1k views

scala - Conditional Join in Spark DataFrame

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 776 views

scala - How can I get the current SparkSession in any place of the codes?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 900 views

scala - What is the difference between ArrayBuffer and Array

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1 answer 926 views

scala - Akka 2.1 minimal remote actor example

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - Create array of literals and columns from List of Strings in Spark SQL

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 804 views

scala - Passing a Shapeless Extensible Record to a Function

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1 answer 787 views

scala - Convert normal recursion to tail recursion

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 855 views

scala - Date conversion

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 855 views

scala - Problems with SBT dependencies in Intellij Idea

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 738 views

scala - MatchError when match receives an IndexedSeq but not a LinearSeq

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 945 views

scala - Anorm LIKE clause with String Interpolation

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 900 views

scala self-type: value is not a member error

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 994 views

scala - How to convert a column from hex string to long?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1 answer 1.4k views

scala - Process all columns / the entire row in a Spark UDF

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - How to flatten list of options using higher order functions?

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scala - What is a diverging implicit expansion error?

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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